Remote Direct Memory Access Transport for Remote Procedure Call
RFC 5666
| Document | Type |
RFC - Proposed Standard
(January 2010; No errata)
Obsoleted by RFC 8166
|
|
|---|---|---|---|
| Authors | Tom Talpey , Brent Callaghan | ||
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 5666 (Proposed Standard) | |
| Action Holders |
(None)
|
||
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Lars Eggert | ||
| Send notices to | (None) | ||
Internet Engineering Task Force (IETF) T. Talpey
Request for Comments: 5666 Unaffiliated
Category: Standards Track B. Callaghan
ISSN: 2070-1721 Apple
January 2010
Remote Direct Memory Access Transport for Remote Procedure Call
Abstract
This document describes a protocol providing Remote Direct Memory
Access (RDMA) as a new transport for Remote Procedure Call (RPC).
The RDMA transport binding conveys the benefits of efficient, bulk-
data transport over high-speed networks, while providing for minimal
change to RPC applications and with no required revision of the
application RPC protocol, or the RPC protocol itself.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc5666.
Copyright Notice
Copyright (c) 2010 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Talpey & Callaghan Standards Track [Page 1]
RFC 5666 RDMA Transport for RPC January 2010
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
10, 2008. The person(s) controlling the copyright in some of this
material may not have granted the IETF Trust the right to allow
modifications of such material outside the IETF Standards Process.
Without obtaining an adequate license from the person(s) controlling
the copyright in such materials, this document may not be modified
outside the IETF Standards Process, and derivative works of it may
not be created outside the IETF Standards Process, except to format
it for publication as an RFC or to translate it into languages other
than English.
Table of Contents
1. Introduction ....................................................3
1.1. Requirements Language ......................................4
2. Abstract RDMA Requirements ......................................4
3. Protocol Outline ................................................5
3.1. Short Messages .............................................6
3.2. Data Chunks ................................................6
3.3. Flow Control ...............................................7
3.4. XDR Encoding with Chunks ...................................8
3.5. XDR Decoding with Read Chunks .............................11
3.6. XDR Decoding with Write Chunks ............................12
3.7. XDR Roundup and Chunks ....................................13
3.8. RPC Call and Reply ........................................14
3.9. Padding ...................................................17
4. RPC RDMA Message Layout ........................................18
4.1. RPC-over-RDMA Header ......................................18
4.2. RPC-over-RDMA Header Errors ...............................20
4.3. XDR Language Description ..................................20
5. Long Messages ..................................................22
5.1. Message as an RDMA Read Chunk .............................23
5.2. RDMA Write of Long Replies (Reply Chunks) .................24
6. Connection Configuration Protocol ..............................25
6.1. Initial Connection State ..................................26
6.2. Protocol Description ......................................26
7. Memory Registration Overhead ...................................28
8. Errors and Error Recovery ......................................28
9. Node Addressing ................................................28
10. RPC Binding ...................................................29
11. Security Considerations .......................................30
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